Airworthiness directives › 2021-10-19
AD 2021-10-19 Airworthiness Directives; The Boeing Company Airplanes
Models named: 767-200, -300, -300F, -400ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category, line numbers 1 through 1218 inclusive. (2) Installation of Supplemental Type Certificate (STC) ST01920SE affects the ability to accomplish some of the actions required by this AD. Therefore, for airplanes on which STC ST01920SE is installed, a “change in product” alternative method of compliance (AMOC) approval may be necessary to comply with the requirements of 14 CFR 39.17.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 24 months after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Boeing 767-200/300/300F/400ER Airworthiness Limitations (AWLs), D622T001-9-01, dated July 2020; and Boeing 767-200/300/300F/400ER Damage Tolerance Rating (DTR) Check Form Document, D622T001-DTR, dated February 2020. Except as specified in paragraph (h) of this AD, the initial compliance time for doing the tasks is at the time specified in Boeing 767-200/300/300F/400ER Airworthiness Limitations (AWLs), D622T001-9-01, dated July 2020; and Boeing 767-200/300/300F/400ER Damage Tolerance Rating (DTR) Check Form Document, D622T001-DTR, dated February 2020; or within 24 months after the effective date of this AD; whichever occurs later.
Unsafe condition
This AD was prompted by a determination that new or more restrictive airworthiness limitations (AWLs) are necessary. The FAA is issuing this AD to address inadequate AWL and damage tolerance rating (DTR) values in the maintenance or inspection program that reduce the probability of detection for foreseeable fatigue cracking of structurally significant items (SSIs). This condition, if not addressed, could result in the loss of limit load capability of an SSI as well as loss of continued safe flight and landing of the airplane.
Affected ADs
This AD affects AD 2014-14-04, Amendment 39-17899 (79 FR 44672, August 1, 2014) (AD 2014-14-04).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1